[R] CRAN - Package "activity" - how do you convert time (hh:mm) into radians in R 3.1.2 on Windows 7 OS 64bit

[Martin Maechler]

>>>>> Bert Gunter <bgunter.4567 at gmail.com>
>>>>>     on Tue, 3 Nov 2015 14:54:46 -0800 writes:

    > ... should have said: with a 24 hour "clock".
    > -- Bert
    > Bert Gunter

Hmm,  thank you Bert.

I know nothing about measuring time in radians, and for me,
'radians' are angles, and hence we are talking about
analogue watches when measuring time with them, and now, as a
citizen from  "the watch maker country" I do like analogue
watches or let's nowadays say "graphical" watches, i.e., with clock
faces and short and long (hour and minute) hands, and I think I
have only ever seen 12 h watches at least on church towers (yes,
here in CH) or wrist watches...
(?)

Martin
(Maechler, ETH Zurich, Switzerland)

    > On Tue, Nov 3, 2015 at 2:52 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:
    >> Hint: 24 hours = 24x60 = 1440 minutes = 2 pi radians.
    >> 
    >> Cheers,
    >> Bert
    >> Bert Gunter
    >> 
    >> "Data is not information. Information is not knowledge. And knowledge
    >> is certainly not wisdom."
    >> -- Clifford Stoll
    >> 
    >> 
    >> On Tue, Nov 3, 2015 at 2:00 PM, Typhenn Brichieri-Colombi via R-help
    >> <r-help at r-project.org> wrote:
    >>> Hello,
    >>> I am using the "activity" package developed by Marcus Rowcliffe (released in February, 2015). This package uses time in radians to estimate activity. I have camera trap data in 24 hour times (hh:mm) - how do I convert these into radians? (e.g. My time-of-detection at 19:44, how do I convert this into radians?)
    >>> Thank you for your time and your help
    >>> [[alternative HTML version deleted]]
    >>> 
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    > ______________________________________________
    > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
    > https://stat.ethz.ch/mailman/listinfo/r-help
    > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
    > and provide commented, minimal, self-contained, reproducible code.